Return-Path: Delivered-To: apmail-hadoop-core-dev-archive@www.apache.org Received: (qmail 90741 invoked from network); 2 Mar 2009 06:52:22 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 2 Mar 2009 06:52:22 -0000 Received: (qmail 70009 invoked by uid 500); 2 Mar 2009 06:52:11 -0000 Delivered-To: apmail-hadoop-core-dev-archive@hadoop.apache.org Received: (qmail 69937 invoked by uid 500); 2 Mar 2009 06:52:11 -0000 Mailing-List: contact core-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: core-dev@hadoop.apache.org Delivered-To: mailing list core-dev@hadoop.apache.org Received: (qmail 69911 invoked by uid 99); 2 Mar 2009 06:52:10 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 01 Mar 2009 22:52:10 -0800 X-ASF-Spam-Status: No, hits=3.4 required=10.0 tests=HTML_MESSAGE,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (nike.apache.org: local policy) Received: from [216.145.54.172] (HELO mrout2.yahoo.com) (216.145.54.172) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 02 Mar 2009 06:52:00 +0000 Received: from [192.168.1.71] (snvvpn1-10-72-72-c106.hq.corp.yahoo.com [10.72.72.106]) by mrout2.yahoo.com (8.13.6/8.13.6/y.out) with ESMTP id n226pPTX048047 for ; Sun, 1 Mar 2009 22:51:26 -0800 (PST) DomainKey-Signature: a=rsa-sha1; s=serpent; d=yahoo-inc.com; c=nofws; q=dns; h=message-id:from:to:in-reply-to:content-type:mime-version: subject:date:references:x-mailer; b=z9V+PcicBTU6II0Je1m70vimWFBoHE8ESL4qeUMaaomjShGrD/t335rRLHzhco6S Message-Id: From: Sanjay Radia To: In-Reply-To: <870612.98226.qm@web53610.mail.re2.yahoo.com> Content-Type: multipart/alternative; boundary=Apple-Mail-7--30999308 Mime-Version: 1.0 (Apple Message framework v930.3) Subject: Re: multiple datanodes on single node cluster Date: Sun, 1 Mar 2009 22:10:38 -0800 References: <1bd817da0902252304p639a36abva29c4410417208cc@mail.gmail.com> <870612.98226.qm@web53610.mail.re2.yahoo.com> X-Mailer: Apple Mail (2.930.3) X-Virus-Checked: Checked by ClamAV on apache.org --Apple-Mail-7--30999308 Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit On Feb 25, 2009, at 11:55 PM, lohit wrote: > It is possible to run multiple datanodes. > You would have to have separate conf file for each datanode, > basically you need to have different datanode address > (dfs.datanode.address and related) > and different storage directories dfs.data.dir. Have different > configs and start each datanode instance with different conf > directory containing different conf file > Lohit > > > > ----- Original Message ---- > From: Ajit Ratnaparkhi > To: core-dev@hadoop.apache.org > Sent: Wednesday, February 25, 2009 11:04:15 PM > Subject: multiple datanodes on single node cluster > > Hi all, > > Is it possible to run multiple datanode instances on single node > hadoop > cluster? > > How to do that? > > thanks, > -Ajit > > The minicluster also allows multiple data nodes in the same JVM. This normally used only for testing. See DataNodeCluster under src/test. This is probably not what you are looking for but I thought I would mention it. sanjay --Apple-Mail-7--30999308--